Watch dial



FIG. 1 is a front elevational view of a watch dial showing my new design, the rear being the same in appearance as the front;

FIG. 2 is a top plan view thereof, the bottom being the same in appearance as the top; and,

FIG. 3 is a right side elevational view thereof, the left side being the same in appearance as the right side. 

The ornamental design for a watch dial, as shown and described. 